Operating mechanism for stone or ore crushers.



No. 650,!2l. Patented-"n22, I900.

W. H. BAXTER. OPERATING MECHANISM FORSTONE 0R DRE GBUSHEBS. I

(Application filed 14 1899.

v (No Model.) 25haots-Sheat I.

i Patented May 22, I900. W. H. BAXTER. OPERATING MECHANISM FOR STONE OBOR E BBUSHEBS.

. (Application filed Aug. 14, 1899.)

2 Sheets-S heet -2.

v(IIo Modal) UNIT D STATES PATENT ()FFICE.

wn; JAM HENRY nnx'rnn, or nAn'noe'A'rn, ENGLAND.

OP ERATJNG MECHANISM FOR STONE ORORECRUSHERS.

sPEc FIca'rI'oN forming part of Letters Patent No. 650,121, dated May22,1900. Application filed August 14, 1899. Serial In. 727,235. (N0 modeTo It whom it may concern.-

- Be it known that I, WILLIAM HENRY BAX TER, asubject of the Queen ofGreat Britain and Ireland, residing at IIarrogate, in the county ofYork, England, have'invented new and useful Improvements in theOperating Mechanism of Stone or Ore Crushers, of which the following isa specification.

This invention relates to improvements .in theoperating mechanism ofstone-breaking and ore-crushing and other machines where similarmovements are requ'ired.-as, for instance, in punching and shearingmachines. Its object is to provide means whereby theconnecting-redo!pitman ofthe machine is mounted upon an eccentric onashaft carried. in bearings rigidly connected to or forming partoftherear of the movable ja'w, 's0 as ,to

.rise and fall therewith, instead of being mounted in bearings whiclrarestationary in the framework, as hitherto. By this means an increased,say, crushing or breaking pres sure is imparted to the movable jawwithout any serious loss of movement.

In the accompanying, drawings the invention is shown as applied to astone-breaking and ore-crushing machine; but Iwould distinctly have itunderstood that it may be applied to other machines where similarmovements are-required-sueh as, for instance, punching-and shearingmachines.

-I igure 1 is a sectional elevation, and Fig. 3 a plan, looking att'hetop of astone-breakin g and'orc-crushing machine constructed accordingto this invention.

.A. is the :main framework of the machine, which may be formed in onepiece or built up in parts, bolted or otherwise fixed or securedtogether by any convenie nt means, and it may be made of anysuitabiematerialsuch as, say, cast-iron or steel; B, the fixed jaw, which isarranged in the framework A in the usual position; 0, the movablejawstock, which is mounted on and to be pendent from ashaft D, carriedin bearings fornied for its reception in the framework; 0'', the

renewable jaw-face fixed to the jaw-stock O.

The use of caps or covers for the bearings of the shaft D is optional,and I prefer to dispense with their use, :as shown in the drawings. Theshaft D may either be a fixture in its bearings, in which case themovable jawstock C wonld oscillate thereon, or the said shaft may be afixture in the jaw-stock O, in which'case the projecting ends of theshaft would form trunnions on which the movable jaw-stock 0 couldoscillate in its said bearings. Instead of mounting the connectingrod orpit-man E on a shaft carried in bearings on the framework of themachine, as is 'usually done, I arrange the bearings F for the shaft G,to be formed in the armsor brackets, hereinafter termed brackets II,which may form a part of or be attached to the movin gjaw-stoek C- ofthe machine. In the drawings the brackets 11 are shown forming a part ofthe inovablcjawstock, which is bifurcated provided with the caps I, asshown, which are bolted or otherwise fixed to the said brackets forretaining the shaft G in position.

On the shaft- G is or are mounted .01' fixed oneor-m'ore eccentrics J,on which the connecting-rod or pitmanE is pendently mount- "ed. Theeccentric or eccentrics J is or are arranged to rotate in the eye orhole in the upper part of the pitmanE, as shown. the said shaft G arealso mounted and fixed the usual (I rivingpulley K and fly wheel orwheels L. The lower end of the connecting-rod or pitman E is retained inposition by a pair of toggles M, respectively interposed on each sidethereof in the usual manner between the The parts are supported-in thema to form a pair of brackets II, and they are '1 inner ends areattached together, while their outer endsare connected to the frameworkA and movable jaw-stock O-.that is to say,

the outer end of drawback-rod P, is adjustably secured to-thespring-buffer R at the rear end of framework A, or the ends of theselast-named levers, rods, or chains are connected to a very'strong eyebelt or bolts,

drawback-rod so as to be capable of adjustment by means" or it or theirequivalents, secure d to the rear end of the machine, while the outerend of Q, which is made in two parts,

of nut S, havingaright and lefthand thread cut therein or otherwise, isattached to the movable jaw-stock C. If desired, a chain or chains maybe vused in place of one or both of the drawback-rods P Q. Theselast-named toggle-levers, rods, or chains not only aid in suspending theconnecting-rod or pitm'an,

but also in retaining it in position during the,

movement of the eccentriclor eccentrics.

In place of the toggle-levers, rods, or chains the whole of the workingparts may be held in sition by a rod and strong spring at tac ed,respectively, to the movable jawstock and to the outer or other portionof the framework. Y

' Side wedges '1 may or may not be inserted in the framework A toprevent'it wearing away and which may be readily replaced and provide aready means for renewing this por-, tion of the frameworkA, as occasionrequires.

By mounting the shaft G in the bearings F of bracket II, forming part ofor attached to the movable jaw stoek .0, instead of in bearings inframework A, as is usually done, the whole weight of the fly-wheels I),pulley K, and connecting-rod or'pitman E, which are mounted or fixed onsaid shaft, are utilized v of the said pitman.

pended at its lower end by'the drawbackrods P Q and the interposition ofthe toggles M, as previously described. As soon as the eccentric oreccentrics J is or are rotated and passed it or their nadir or lowestpoint or points the connecting-rod or pitman E will,

by the continued rotation of the eccentric or eccentrics, commence toreturn to the position shown in the drawings, and in' so doingthe'movable jaw C will, by the drawback-rods PQ and toggles M, bewithdrawn from the fixed jaw B.

Other parts'of the machine not particularly described or shown may be orthe usual and ordinary construction. It will be readily understood thatinstead of placing the eccentric-shaft directly on the brackets H ofthe, jaw-stock 0 one or more levers may be arranged so as' torest onthis position and to be operated ,bya connectingrod and crank oreccentric shaft supported in bearings mounted in or on the framework, sothat the actual weight or pressure of the operating parts is imparteddirectly to the jaw-stock O for breaking or erushin g the materialoperated upon.

Having now described the nature of my said invention, what I claim, anddesire to secure by Letters Patent, is

.1 In a stone-breaking and ore-crushing machine, the combination of amovahlejgw stock, a shaft on which the movable jaw-stool;

is mounted, brackets rigidly connected to the rear of and moving withsaid jaw-stock, a shaft carried in bearings and rising and fallingwithin said brackets,'aneccentric mounted upon the last named shaft, apitman mounted on said eccentric, suitableconnections between saidpitlnan and the jaw-stock all substantially as and for the purposes setforth.

2. In astone-breaking and ore-crushingmachine, the combination of amovable jaw stock, a shaft on which the movable jaw-stock is mounted,brackets at the rear of and mov ing with said jaw-stock, a shaft carriedin said brackets an eccentric mounted upon the lastmamed shaft, a pitmanmounted on said eceentr-ic,adj ustable drawback-rods attachedtogether'at one. end at the lower end of pitman and at their other endsrespectively to the movable jaw-stock and framework of the machine, atoggle-block at the rear of the machine, a wedge at the back oftoggle-block, toggles respectively interposed between movable jaw-stock,pitman, and toggle-block,and

the fly-wheels and driving-pulley mounted upon the eccentric-shaft,-allsubstantially as and for the purposes set forth.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

WILLIAM HENRY Br lXTER. Witnesses: I

ADAM O. HART, ANNIE PARK.

